Table 1

 Main sociodemographic characteristics of PVS positive and negative participants

VariablesPVS positive (n = 183)PVS negative (n = 1419)
MaleFemaleMaleFemale
n%n%n%n%
Mean (SD) ages were: male 36.5 (15.5) years; female, 40.0 (19.9)) years. *Border, countries bordering Switzerland; †non-border, countries not bordering Switzerland.
Sex9652.58747.569949.372050.7
Age category (years)
    16–344647.94551.718927.018425.6
    35–543334.42326.421330.516022.2
    ⩾551717.71921.829742.537652.2
Marital status
    Single5153.74046.521130.318325.6
    Divorced1111.678.1679.69313.0
    Married2829.52529.136552.426036.4
    Separated55.367.0172.4142.0
    Widowed89.3365.216523.1
Nationality
    Swiss5759.44349.442060.145963.8
    Border*1414.61112.69814.09813.6
    Non-border†2324.03034.516824.014019.4
    Unknown22.133.4131.9233.2
Admitting unit
    Medical ED2627.13034.530343.335649.4
    Surgical ED7072.95765.539656.736450.6
Days of admission
    Monday–Thursday4647.94450.638755.440856.7
    Friday–Sunday5052.14349.431244.631243.3
Hour of admission
    0800 to 1600442.73135.636351.936650.8
    1600 to 24003031.33236.824535.125735.7
    2400 to 08002526.02427.69113.09713.5